bsd/netinet6/in6_proto.c

   1 /*
   2  * Copyright (c) 2008-2012 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 /*      $FreeBSD: src/sys/netinet6/in6_proto.c,v 1.19 2002/10/16 02:25:05 sam Exp $     */
  30 /*      $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $      */
  31
  32 /*
  33  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. Neither the name of the project nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  */
  60
  61 /*
  62  * Copyright (c) 1982, 1986, 1993
  63  *      The Regents of the University of California.  All rights reserved.
  64  *
  65  * Redistribution and use in source and binary forms, with or without
  66  * modification, are permitted provided that the following conditions
  67  * are met:
  68  * 1. Redistributions of source code must retain the above copyright
  69  *    notice, this list of conditions and the following disclaimer.
  70  * 2. Redistributions in binary form must reproduce the above copyright
  71  *    notice, this list of conditions and the following disclaimer in the
  72  *    documentation and/or other materials provided with the distribution.
  73  * 3. All advertising materials mentioning features or use of this software
  74  *    must display the following acknowledgement:
  75  *      This product includes software developed by the University of
  76  *      California, Berkeley and its contributors.
  77  * 4. Neither the name of the University nor the names of its contributors
  78  *    may be used to endorse or promote products derived from this software
  79  *    without specific prior written permission.
  80  *
  81  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  82  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  83  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  84  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  85  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  86  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  87  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  88  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  89  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  90  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  91  * SUCH DAMAGE.
  92  *
  93  *      @(#)in_proto.c  8.1 (Berkeley) 6/10/93
  94  */
  95
  96
  97 #include <sys/param.h>
  98 #include <sys/socket.h>
  99 #include <sys/socketvar.h>
 100 #include <sys/protosw.h>
 101 #include <sys/kernel.h>
 102 #include <sys/domain.h>
 103 #include <sys/mbuf.h>
 104 #include <sys/systm.h>
 105 #include <sys/sysctl.h>
 106
 107 #include <net/if.h>
 108 #include <net/radix.h>
 109 #include <net/route.h>
 110
 111 #include <netinet/in.h>
 112 #include <netinet/in_systm.h>
 113 #include <netinet/in_var.h>
 114 #include <netinet/ip_encap.h>
 115 #include <netinet/ip.h>
 116 #include <netinet/ip_var.h>
 117 #include <netinet/ip6.h>
 118 #include <netinet6/ip6_var.h>
 119 #include <netinet/icmp6.h>
 120
 121 #include <netinet/tcp.h>
 122 #include <netinet/tcp_timer.h>
 123 #include <netinet/tcp_var.h>
 124 #include <netinet/udp.h>
 125 #include <netinet/udp_var.h>
 126 #include <netinet6/tcp6_var.h>
 127 #include <netinet6/raw_ip6.h>
 128 #include <netinet6/udp6_var.h>
 129 #include <netinet6/pim6_var.h>
 130 #include <netinet6/nd6.h>
 131 #include <netinet6/in6_prefix.h>
 132 #include <netinet6/mld6_var.h>
 133
 134 #include <netinet6/ip6_mroute.h>
 135
 136 #if IPSEC
 137 #include <netinet6/ipsec.h>
 138 #if INET6
 139 #include <netinet6/ipsec6.h>
 140 #endif
 141 #include <netinet6/ah.h>
 142 #if INET6
 143 #include <netinet6/ah6.h>
 144 #endif
 145 #if IPSEC_ESP
 146 #include <netinet6/esp.h>
 147 #if INET6
 148 #include <netinet6/esp6.h>
 149 #endif
 150 #endif
 151 #include <netinet6/ipcomp.h>
 152 #if INET6
 153 #include <netinet6/ipcomp6.h>
 154 #endif
 155 #endif /*IPSEC*/
 156
 157 #include <netinet6/ip6protosw.h>
 158
 159 #include <net/net_osdep.h>
 160
 161 /*
 162  * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
 163  */
 164
 165 extern  struct domain inet6domain;
 166 static struct pr_usrreqs nousrreqs;
 167 lck_mtx_t *inet6_domain_mutex;
 168
 169 #define PR_LISTEN       0
 170 #define PR_ABRTACPTDIS  0
 171
 172 extern int in6_inithead(void **, int);
 173 void in6_dinit(void) __attribute__((section("__TEXT, initcode")));
 174
 175 static int rip6_pr_output(struct mbuf *m, struct socket *so, struct sockaddr_in6 *, struct mbuf *);
 176
 177 struct ip6protosw inet6sw[] = {
 178 { 0,            &inet6domain,   IPPROTO_IPV6,   0,
 179   0,            0,              0,              0,
 180   0,
 181   ip6_init,     0,              frag6_slowtimo, frag6_drain,
 182   0,
 183   &nousrreqs,
 184   0,            0,              0,
 185   { 0, 0 }, NULL, { 0 }
 186 },
 187 { SOCK_DGRAM,   &inet6domain,   IPPROTO_UDP,    PR_ATOMIC|PR_ADDR|PR_PROTOLOCK|PR_PCBLOCK,
 188   udp6_input,   0,              udp6_ctlinput,  ip6_ctloutput,
 189   0,
 190   0,            0,              0,              0,
 191   0,
 192   &udp6_usrreqs,
 193   udp_lock,     udp_unlock,     udp_getlock,
 194   { 0, 0 }, NULL, { 0 }
 195 },
 196 { SOCK_STREAM,  &inet6domain,   IPPROTO_TCP,    PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_PROTOLOCK|PR_PCBLOCK|PR_DISPOSE,
 197   tcp6_input,   0,              tcp6_ctlinput,  tcp_ctloutput,
 198   0,
 199 #if INET        /* don't call initialization and timeout routines twice */
 200   0,            0,              0,              tcp_drain,
 201 #else
 202   tcp_init,     0,      tcp_slowtimo,   tcp_drain,
 203 #endif
 204   0,
 205   &tcp6_usrreqs,
 206   tcp_lock,     tcp_unlock,     tcp_getlock,
 207   { 0, 0 }, NULL, { 0 }
 208 },
 209 { SOCK_RAW,     &inet6domain,   IPPROTO_RAW,    PR_ATOMIC|PR_ADDR,
 210   rip6_input,   rip6_pr_output, rip6_ctlinput,  rip6_ctloutput,
 211   0,
 212   0,            0,              0,              0,
 213   0,
 214   &rip6_usrreqs,
 215   0,            rip_unlock,     0,
 216   { 0, 0 }, NULL, { 0 }
 217 },
 218 { SOCK_RAW,     &inet6domain,   IPPROTO_ICMPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 219   icmp6_input,  rip6_pr_output, rip6_ctlinput,  rip6_ctloutput,
 220   0,
 221   icmp6_init,   0,              mld_slowtimo,           0,
 222   0,
 223   &rip6_usrreqs,
 224   0,            rip_unlock,             0,
 225   { 0, 0 }, NULL, { 0 }
 226 },
 227 { SOCK_DGRAM,     &inet6domain,   IPPROTO_ICMPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 228   icmp6_input,  rip6_pr_output, rip6_ctlinput,  icmp6_dgram_ctloutput,
 229   0,
 230   icmp6_init,   0,              mld_slowtimo,              0,
 231   0,
 232   &icmp6_dgram_usrreqs,
 233   0,            rip_unlock,             0,
 234   { 0, 0 }, NULL, { 0 }
 235 },
 236 { SOCK_RAW,     &inet6domain,   IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR,
 237   dest6_input,  0,              0,              0,
 238   0,
 239   0,            0,              0,              0,
 240   0,
 241   &nousrreqs,
 242   0,            0,              0,
 243   { 0, 0 }, NULL, { 0 }
 244 },
 245 { SOCK_RAW,     &inet6domain,   IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR,
 246   route6_input, 0,              0,              0,
 247   0,
 248   0,            0,              0,              0,
 249   0,
 250   &nousrreqs,
 251   0,            0,              0,
 252   { 0, 0 }, NULL, { 0 }
 253 },
 254 { SOCK_RAW,     &inet6domain,   IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR,
 255   frag6_input,  0,              0,              0,
 256   0,
 257   0,            0,              0,              0,
 258   0,
 259   &nousrreqs,
 260   0,            0,              0,
 261   { 0, 0 }, NULL, { 0 }
 262 },
 263 #if IPSEC
 264 { SOCK_RAW,     &inet6domain,   IPPROTO_AH,     PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
 265   ah6_input,    0,              0,              0,
 266   0,
 267   0,            0,              0,              0,
 268   0,
 269   &nousrreqs,
 270   0,            0,              0,
 271   { 0, 0 }, NULL, { 0 }
 272 },
 273 #if IPSEC_ESP
 274 { SOCK_RAW,     &inet6domain,   IPPROTO_ESP,    PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
 275   esp6_input,   0,
 276   esp6_ctlinput,
 277   0,
 278   0,
 279   0,            0,              0,              0,
 280   0,
 281   &nousrreqs,
 282   0,            0,              0,
 283   { 0, 0 }, NULL, { 0 }
 284 },
 285 #endif
 286 { SOCK_RAW,     &inet6domain,   IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
 287   ipcomp6_input, 0,             0,              0,
 288   0,
 289   0,            0,              0,              0,
 290   0,
 291   &nousrreqs,
 292   0,            0,              0,
 293   { 0, 0 }, NULL, { 0 }
 294 },
 295 #endif /* IPSEC */
 296 #if INET
 297 { SOCK_RAW,     &inet6domain,   IPPROTO_IPV4,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 298   encap6_input, rip6_pr_output,         0,              rip6_ctloutput,
 299   0,
 300   encap_init,   0,              0,              0,
 301   0,
 302   &rip6_usrreqs,
 303   0,            rip_unlock,     0,
 304   { 0, 0 }, NULL, { 0 }
 305 },
 306 #endif /*INET*/
 307 { SOCK_RAW,     &inet6domain,   IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 308   encap6_input, rip6_pr_output, 0,              rip6_ctloutput,
 309   0,
 310   encap_init,   0,              0,              0,
 311   0,
 312   &rip6_usrreqs,
 313   0,            rip_unlock,     0,
 314   { 0, 0 }, NULL, { 0 }
 315 },
 316 #if MROUTING
 317 { SOCK_RAW,     &inet6domain,   IPPROTO_PIM,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 318   pim6_input,   rip6_pr_output, 0,              rip6_ctloutput,
 319   0,
 320   0,            0,              0,              0,
 321   0,
 322   &rip6_usrreqs,
 323   0,            rip_unlock,     0,
 324   { 0, 0 }, NULL, { 0 }
 325 },
 326 #endif
 327 /* raw wildcard */
 328 { SOCK_RAW,     &inet6domain,   0,              PR_ATOMIC|PR_ADDR|PR_LASTHDR,
 329   rip6_input,   rip6_pr_output, 0,              rip6_ctloutput,
 330   0,
 331   0,            0,              0,              0,
 332   0,
 333   &rip6_usrreqs,
 334   0,            rip_unlock,     0,
 335   { 0, 0 }, NULL, { 0 }
 336 },
 337 };
 338
 339
 340 int in6_proto_count = (sizeof (inet6sw) / sizeof (struct ip6protosw));
 341
 342 struct domain inet6domain =
 343     { AF_INET6, "internet6", in6_dinit, 0, 0,
 344       (struct protosw *)inet6sw, 0,
 345       in6_inithead, offsetof(struct sockaddr_in6, sin6_addr) << 3, sizeof(struct sockaddr_in6) ,
 346       sizeof(struct sockaddr_in6), 0,
 347       NULL, 0, {0,0}
 348     };
 349
 350 DOMAIN_SET(inet6);
 351
 352 /* Initialize the PF_INET6 domain, and add in the pre-defined protos */
 353 void
 354 in6_dinit(void)
 355 {
 356         register int i;
 357         register struct ip6protosw *pr;
 358         register struct domain *dp;
 359         static int inet6domain_initted = 0;
 360
 361         if (!inet6domain_initted) {
 362                 dp = &inet6domain;
 363
 364                 for (i=0, pr = &inet6sw[0]; i<in6_proto_count; i++, pr++)
 365                         net_add_proto((struct protosw*)pr, dp);
 366
 367                 inet6_domain_mutex = dp->dom_mtx;
 368                 inet6domain_initted = 1;
 369         }
 370 }
 371
 372 int rip6_pr_output(__unused struct mbuf *m, __unused struct socket *so,
 373                                         __unused struct sockaddr_in6 *sin6, __unused struct mbuf *m1)
 374 {
 375         panic("rip6_pr_output\n");
 376         return 0;
 377 }
 378
 379 /*
 380  * Internet configuration info
 381  */
 382 #ifndef IPV6FORWARDING
 383 #if GATEWAY6
 384 #define IPV6FORWARDING  1       /* forward IP6 packets not for us */
 385 #else
 386 #define IPV6FORWARDING  0       /* don't forward IP6 packets not for us */
 387 #endif /* GATEWAY6 */
 388 #endif /* !IPV6FORWARDING */
 389
 390 #ifndef IPV6_SENDREDIRECTS
 391 #define IPV6_SENDREDIRECTS      1
 392 #endif
 393
 394 int     ip6_forwarding = IPV6FORWARDING;        /* act as router? */
 395 int     ip6_sendredirects = IPV6_SENDREDIRECTS;
 396 int     ip6_defhlim = IPV6_DEFHLIM;
 397 int     ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
 398 int     ip6_accept_rtadv = 1;   /* deprecated */
 399 int     ip6_maxfragpackets;     /* initialized in frag6.c:frag6_init() */
 400 int     ip6_maxfrags;
 401 int     ip6_log_interval = 5;
 402 int     ip6_hdrnestlimit = 15;  /* How many header options will we process? */
 403 int     ip6_dad_count = 1;      /* DupAddrDetectionTransmits */
 404 u_int32_t ip6_flow_seq;
 405 int     ip6_auto_flowlabel = 1;
 406 int     ip6_gif_hlim = 0;
 407 int     ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */
 408 int     ip6_rr_prune = 5;       /* router renumbering prefix
 409                                  * walk list every 5 sec.    */
 410 int     ip6_mcast_pmtu = 0;     /* enable pMTU discovery for multicast? */
 411 int     ip6_v6only = 0;         /* Mapped addresses off by default -  Radar 3347718  -- REVISITING FOR 10.7 -- TESTING WITH MAPPED@ OFF */
 412
 413 int     ip6_neighborgcthresh = 1024;    /* Threshold # of NDP entries for GC */
 414 int     ip6_maxifprefixes = 16;         /* Max acceptable prefixes via RA per IF */
 415 int     ip6_maxifdefrouters = 16;       /* Max acceptable def routers via RA */
 416 int     ip6_maxdynroutes = 1024;        /* Max # of routes created via redirect */
 417 int     ip6_only_allow_rfc4193_prefix = 0;      /* Only allow RFC4193 style Unique Local IPv6 Unicast prefixes */
 418
 419 u_int32_t ip6_id = 0UL;
 420 static int ip6_keepfaith = 0;
 421 time_t  ip6_log_time = (time_t)0L;
 422 int     nd6_onlink_ns_rfc4861 = 0; /* allow 'on-link' nd6 NS (as in RFC 4861) */
 423
 424 /* icmp6 */
 425 /*
 426  * BSDI4 defines these variables in in_proto.c...
 427  * XXX: what if we don't define INET? Should we define pmtu6_expire
 428  * or so? (jinmei@kame.net 19990310)
 429  */
 430 int pmtu_expire = 60*10;
 431 int pmtu_probe = 60*2;
 432
 433 /* raw IP6 parameters */
 434 /*
 435  * Nominal space allocated to a raw ip socket.
 436  */
 437 #define RIPV6SNDQ       8192
 438 #define RIPV6RCVQ       8192
 439
 440 u_int32_t       rip6_sendspace = RIPV6SNDQ;
 441 u_int32_t       rip6_recvspace = RIPV6RCVQ;
 442
 443 /* ICMPV6 parameters */
 444 int     icmp6_rediraccept = 1;          /* accept and process redirects */
 445 int     icmp6_redirtimeout = 10 * 60;   /* 10 minutes */
 446 int     icmp6errppslim = 500;           /* 500 packets per second */
 447 int     icmp6_nodeinfo = 3;             /* enable/disable NI response */
 448
 449 /* UDP on IP6 parameters */
 450 int     udp6_sendspace = 9216;          /* really max datagram size */
 451 int     udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6));
 452                                         /* 40 1K datagrams */
 453
 454 /*
 455  * sysctl related items.
 456  */
 457 SYSCTL_NODE(_net,       PF_INET6,       inet6,  CTLFLAG_RW | CTLFLAG_LOCKED,    0,
 458         "Internet6 Family");
 459
 460 /* net.inet6 */
 461 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6,   ip6,    CTLFLAG_RW|CTLFLAG_LOCKED, 0,   "IP6");
 462 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6,  CTLFLAG_RW|CTLFLAG_LOCKED, 0,   "ICMP6");
 463 SYSCTL_NODE(_net_inet6, IPPROTO_UDP,    udp6,   CTLFLAG_RW|CTLFLAG_LOCKED, 0,   "UDP6");
 464 SYSCTL_NODE(_net_inet6, IPPROTO_TCP,    tcp6,   CTLFLAG_RW|CTLFLAG_LOCKED, 0,   "TCP6");
 465 #if IPSEC
 466 SYSCTL_NODE(_net_inet6, IPPROTO_ESP,    ipsec6, CTLFLAG_RW|CTLFLAG_LOCKED, 0,   "IPSEC6");
 467 #endif /* IPSEC */
 468
 469 /* net.inet6.ip6 */
 470 static int
 471 sysctl_ip6_temppltime SYSCTL_HANDLER_ARGS
 472 {
 473 #pragma unused(oidp, arg2)
 474         int error = 0;
 475         int old;
 476
 477         error = SYSCTL_OUT(req, arg1, sizeof(int));
 478         if (error || !req->newptr)
 479                 return (error);
 480         old = ip6_temp_preferred_lifetime;
 481         error = SYSCTL_IN(req, arg1, sizeof(int));
 482         if (ip6_temp_preferred_lifetime > ND6_MAX_LIFETIME ||
 483             ip6_temp_preferred_lifetime <
 484             ip6_desync_factor + ip6_temp_regen_advance) {
 485                 ip6_temp_preferred_lifetime = old;
 486                 return(EINVAL);
 487         }
 488         return(error);
 489 }
 490
 491 static int
 492 sysctl_ip6_tempvltime SYSCTL_HANDLER_ARGS
 493 {
 494 #pragma unused(oidp, arg2)
 495         int error = 0;
 496         int old;
 497
 498         error = SYSCTL_OUT(req, arg1, sizeof(int));
 499         if (error || !req->newptr)
 500                 return (error);
 501         old = ip6_temp_valid_lifetime;
 502         error = SYSCTL_IN(req, arg1, sizeof(int));
 503         if (ip6_temp_valid_lifetime > ND6_MAX_LIFETIME ||
 504             ip6_temp_valid_lifetime < ip6_temp_preferred_lifetime) {
 505                 ip6_temp_preferred_lifetime = old;
 506                 return(EINVAL);
 507         }
 508         return(error);
 509 }
 510
 511 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING,
 512         forwarding, CTLFLAG_RW | CTLFLAG_LOCKED,        &ip6_forwarding,        0, "");
 513 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS,
 514         redirect, CTLFLAG_RW | CTLFLAG_LOCKED,  &ip6_sendredirects,     0, "");
 515 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM,
 516         hlim, CTLFLAG_RW | CTLFLAG_LOCKED,              &ip6_defhlim,   0, "");
 517 SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_STATS, stats, CTLFLAG_RD | CTLFLAG_LOCKED,
 518         &ip6stat, ip6stat, "");
 519 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS,
 520         maxfragpackets, CTLFLAG_RW | CTLFLAG_LOCKED,    &ip6_maxfragpackets,    0, "");
 521 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS,
 522         maxfrags, CTLFLAG_RW | CTLFLAG_LOCKED,           &ip6_maxfrags,  0, "");
 523 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV,
 524         accept_rtadv, CTLFLAG_RD | CTLFLAG_LOCKED,
 525         &ip6_accept_rtadv,      0, "");
 526 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH,
 527         keepfaith, CTLFLAG_RD | CTLFLAG_LOCKED,         &ip6_keepfaith, 0, "");
 528 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL,
 529         log_interval, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_log_interval,   0, "");
 530 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT,
 531         hdrnestlimit, CTLFLAG_RW | CTLFLAG_LOCKED,      &ip6_hdrnestlimit,      0, "");
 532 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT,
 533         dad_count, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_dad_count, 0, "");
 534 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL,
 535         auto_flowlabel, CTLFLAG_RW | CTLFLAG_LOCKED,    &ip6_auto_flowlabel,    0, "");
 536 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM,
 537         defmcasthlim, CTLFLAG_RW | CTLFLAG_LOCKED,      &ip6_defmcasthlim,      0, "");
 538 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM,
 539         gifhlim, CTLFLAG_RW | CTLFLAG_LOCKED,   &ip6_gif_hlim,                  0, "");
 540 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION,
 541         kame_version, CTLFLAG_RD | CTLFLAG_LOCKED, (void *)((uintptr_t)(__KAME_VERSION)),               0, "");
 542 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED,
 543         use_deprecated, CTLFLAG_RW | CTLFLAG_LOCKED,    &ip6_use_deprecated,    0, "");
 544 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE,
 545         rr_prune, CTLFLAG_RW | CTLFLAG_LOCKED,  &ip6_rr_prune,                  0, "");
 546 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR,
 547         use_tempaddr, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_use_tempaddr,           0, "");
 548 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
 549            CTLTYPE_INT|CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_temp_preferred_lifetime, 0,
 550            sysctl_ip6_temppltime, "I", "");
 551 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
 552            CTLTYPE_INT|CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_temp_valid_lifetime, 0,
 553            sysctl_ip6_tempvltime, "I", "");
 554 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY,
 555         v6only, CTLFLAG_RW | CTLFLAG_LOCKED,    &ip6_v6only,            0, "");
 556 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL,
 557         auto_linklocal, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_auto_linklocal,       0, "");
 558 SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, CTLFLAG_RD | CTLFLAG_LOCKED,
 559         &rip6stat, rip6stat, "");
 560 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR,
 561         prefer_tempaddr, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_prefer_tempaddr,     0, "");
 562 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE,
 563         use_defaultzone, CTLFLAG_RW | CTLFLAG_LOCKED, &ip6_use_defzone,         0,"");
 564 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU,
 565         mcast_pmtu, CTLFLAG_RW | CTLFLAG_LOCKED,        &ip6_mcast_pmtu,        0, "");
 566 #if MROUTING
 567 SYSCTL_STRUCT(_net_inet6_ip6, OID_AUTO, mrt6stat, CTLFLAG_RD | CTLFLAG_LOCKED,
 568         &mrt6stat, mrt6stat, "");
 569 #endif
 570 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NEIGHBORGCTHRESH,
 571         neighborgcthresh, CTLFLAG_RW | CTLFLAG_LOCKED,  &ip6_neighborgcthresh,  0, "");
 572 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXIFPREFIXES,
 573         maxifprefixes, CTLFLAG_RW | CTLFLAG_LOCKED,     &ip6_maxifprefixes,     0, "");
 574 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXIFDEFROUTERS,
 575         maxifdefrouters, CTLFLAG_RW | CTLFLAG_LOCKED,   &ip6_maxifdefrouters,   0, "");
 576 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXDYNROUTES,
 577         maxdynroutes, CTLFLAG_RW | CTLFLAG_LOCKED,      &ip6_maxdynroutes,      0, "");
 578 SYSCTL_INT(_net_inet6_ip6, OID_AUTO,
 579         only_allow_rfc4193_prefixes, CTLFLAG_RW | CTLFLAG_LOCKED,
 580         &ip6_only_allow_rfc4193_prefix, 0, "");
 581
 582 /* net.inet6.icmp6 */
 583 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT,
 584         rediraccept, CTLFLAG_RW | CTLFLAG_LOCKED,       &icmp6_rediraccept,     0, "");
 585 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT,
 586         redirtimeout, CTLFLAG_RW | CTLFLAG_LOCKED,      &icmp6_redirtimeout,    0, "");
 587 SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD | CTLFLAG_LOCKED,
 588         &icmp6stat, icmp6stat, "");
 589 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE,
 590         nd6_prune, CTLFLAG_RW | CTLFLAG_LOCKED,         &nd6_prune,     0, "");
 591 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY,
 592         nd6_delay, CTLFLAG_RW | CTLFLAG_LOCKED,         &nd6_delay,     0, "");
 593 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES,
 594         nd6_umaxtries, CTLFLAG_RW | CTLFLAG_LOCKED,     &nd6_umaxtries, 0, "");
 595 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES,
 596         nd6_mmaxtries, CTLFLAG_RW | CTLFLAG_LOCKED,     &nd6_mmaxtries, 0, "");
 597 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK,
 598         nd6_useloopback, CTLFLAG_RW | CTLFLAG_LOCKED,   &nd6_useloopback, 0, "");
 599 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ACCEPT_6TO4,
 600         nd6_accept_6to4, CTLFLAG_RW | CTLFLAG_LOCKED,   &nd6_accept_6to4, 0, "");
 601 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO,
 602         nodeinfo, CTLFLAG_RW | CTLFLAG_LOCKED,  &icmp6_nodeinfo,        0, "");
 603 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT,
 604         errppslimit, CTLFLAG_RW | CTLFLAG_LOCKED,       &icmp6errppslim,        0, "");
 605 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT,
 606         nd6_maxnudhint, CTLFLAG_RW | CTLFLAG_LOCKED,    &nd6_maxnudhint, 0, "");
 607 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG,
 608         nd6_debug, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_debug,             0, "");
 609 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
 610         nd6_onlink_ns_rfc4861, CTLFLAG_RW | CTLFLAG_LOCKED, &nd6_onlink_ns_rfc4861, 0,
 611         "Accept 'on-link' nd6 NS in compliance with RFC 4861.");
 612 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_OPTIMISTIC_DAD,
 613         nd6_optimistic_dad, CTLFLAG_RW | CTLFLAG_LOCKED,        &nd6_optimistic_dad,            0, "");